78779990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{5407}}^1$

素因数の和:5492

約数の個数: 32

約数和(自身を含む): 149520384

約数和(自身を除く): 70740394

約数列:

[1, 2, 5, 10, 31, 47, 62, 94, 155, 235, 310, 470, 1457, 2914, 5407, 7285, 10814, 14570, 27035, 54070, 167617, 254129, 335234, 508258, 838085, 1270645, 1676170, 2541290, 7877999, 15755998, 39389995, 78779990]

約数ペア:

[(1, 78779990), (2, 39389995), (5, 15755998), (10, 7877999), (31, 2541290), (47, 1676170), (62, 1270645), (94, 838085), (155, 508258), (235, 335234), (310, 254129), (470, 167617), (1457, 54070), (2914, 27035), (5407, 14570), (7285, 10814)]